PWM 구동방식을 이용한 초음파 모터의 힘/ 토크제어




  • 발행 : 2000.11.01


Ultrasonic motors(USM) has been emerging as one type actuators, which possess many advantages such as high torque, low weight, compact size and no magnetic field generation. In spite of these features, there are several problems to be solved, which are temperature rise in case of long term operation, non -linearity, and hysteresis. Among these, hysteresis cause the most serious problem in force/torque control applications. To cope with this paper we propose a new PWM driving method which can be applied to force/torque control applications. To cope with this problem, in this paper we propose a new PWM driving method which can applied to force/torque control of USM. To verify the proposed method, an experimental setup was built and several experiments were performed.


Ultrasonic motor(초음파모터);Piezo-electric material(압전소자);PWM drive(폭변조 구동);Force/torque control(힘/토크 제어)


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